Wireless communication method, terminal device, and network device

ABSTRACT

Disclosed by the embodiments of the present application are a wireless communication method, a terminal device and a network device, the method comprising: a terminal device receives a first bit map sent by a network device, the first bit map being used for indicating time-domain resources allocated by the network device to the terminal device in a first frequency-domain resource unit; and the terminal device carries out data transmission with the network device on the time-domain resources indicated by the first bit map. The method, terminal device and network device according to the embodiments of the present application may improve the flexibility of time domain scheduling.

RELATED APPLICATION

This application is an application under 35 U.S.C. 371 of InternationalApplication No. PCT/CN2017/082900 filed on May 3, 2017, the entirecontents of which are incorporated herein by reference.

TECHNICAL FIELD

Embodiments of the disclosure relate to the field of communications, andmore particularly to a method for wireless communication, a terminaldevice, and a network device.

BACKGROUND

In a long term evolution (LTE) system, time-domain granularities fordata channel resource allocation include a slot (including 7 symbols)and a subframe (including 14 symbols), and a time-frequency resource ofa data channel is scheduled through a physical downlink control channel(PDCCH) by taking a slot and subframe as a time-domain unit. However,such a scheduling mode is relatively low in time-domain flexibility,relatively long in resource allocation delay and high in resourcefragmentation rate, and efficient resource allocation may not beimplemented.

SUMMARY

In view of this, the embodiments of the disclosure provide a method forwireless communication, a terminal device, and a network device, whichmay improve time-domain scheduling flexibility.

A first aspect provides a method for wireless communication, whichincludes that: a terminal device receives a first bitmap from a networkdevice, the first bitmap being used to indicate a time-domain resourceallocated for the terminal device by the network device in a firstfrequency-domain resource unit; and the terminal device performs datatransmission with the network device on the time-domain resourceindicated by the first bitmap.

Through the bitmap, not only continuous time-domain resources but alsodiscontinuous time-domain resources may be indicated, so thattime-domain scheduling flexibility may be improved.

The time-domain resource unit may be a scheduling unit in a time domain,and for example, may be a subframe or slot in LTE, and may also be amini-slot or a time-domain scheduling unit consisting of a specificnumber of symbols in a new system such as 5th-Generation (5G). Thefrequency-domain resource unit may be a scheduling unit in a frequencydomain, may be a physical resource block (PRB) and resource block group(RBG) in LTE or a frequency-domain scheduling unit consisting of aspecific number of resource blocks in the new system, and may also be asub-band.

In a possible implementation, each bit in the first bitmap maycorrespond to at least one time-domain resource unit in the firstfrequency-domain resource unit, and a value of each bit in the firstbitmap may be used to indicate whether the corresponding at least onetime-domain resource unit is used for data transmission.

In a possible implementation, each of bits in the first bitmap maycorrespond to a respective one of time-domain resource units in thefirst frequency-domain resource unit.

Optionally, different mapping relationships between bits in the firstbitmap and time-domain resource units in the first frequency-domainresource unit may represent whether the resource units are used for datatransmission of the terminal device.

In a possible implementation, a left-to-right sequence of the bits inthe first bitmap may be consistent with a sequence of the time-domainresource units in the first frequency-domain resource unit.

Optionally, the left-to-right sequence of the bits in the first bitmapmay be inconsistent with the sequence of the time-domain resource unitsin the first frequency-domain resource unit.

In a possible implementation, the time-domain resource unit may be atleast one of a symbol, a symbol group, a slot, or a mini-slot.

In a possible implementation, after the operation that the terminaldevice receives the first bitmap from the network device, the method mayfurther include that: the terminal device receives first indicationinformation from the network device. The first indication information isto indicate a time-domain resource not available for data transmissionof the terminal device in the first frequency-domain resource unit. Theoperation that the terminal device performs data transmission with thenetwork device on the time-domain resource indicated by the first bitmapmay include that: the terminal device performs data transmission withthe network device on a time-domain resource, other than the time-domainresource indicated by the first indication information, in thetime-domain resource indicated by the first bitmap.

Through the bitmap, not only the continuously distributed time-domainresources may be indicated, but also the discontinuous time-domainresources may be indicated, so that time-domain scheduling flexibilitymay be improved.

In a possible implementation, the first indication information may be asecond bitmap, each bit in the second bitmap may correspond to at leastone time-domain resource unit in the first frequency-domain resourceunit, and a value of each bit in the second bitmap may be used toindicate whether the corresponding at least one time-domain resourceunit is used for data transmission of the terminal device.

In a possible implementation, the method may further include that: theterminal device receives second indication information from the networkdevice. The second indication information is to indicate at least onefrequency-domain resource unit allocated for the terminal device by thenetwork device. The at least one frequency-domain resource unit includesthe first frequency-domain resource unit.

In a possible implementation, the second indication information may be athird bitmap, each of bits in the third bitmap may correspond to arespective one of frequency-domain resource units in a system bandwidth.A value of each bit in the third bitmap is to indicate whether thefrequency-domain resource unit corresponding to the bit is used for datatransmission of the terminal device.

In a possible implementation, the second indication information mayspecifically be used to indicate at least two of a starting position ofthe at least one frequency-domain resource unit in a system bandwidth,an ending position of the at least one frequency-domain resource unit inthe system bandwidth, or a frequency-domain length of the at least onefrequency-domain resource unit.

In a possible implementation, the frequency-domain resource unit may bea PRB, an RBG, or a sub-band.

A second aspect provides a method for wireless communication, whichincludes that: a network device sends a first bitmap to a terminaldevice. The first bitmap is to indicate a time-domain resource allocatedfor the terminal device by the network device in a firstfrequency-domain resource unit.

In a possible implementation, each bit in the first bitmap maycorrespond to at least one time-domain resource unit in the firstfrequency-domain resource unit, and a value of each bit in the firstbitmap may be used to indicate whether the corresponding at least onetime-domain resource unit is used for data transmission of the terminaldevice.

In a possible implementation, each of the bits in the first bitmap maycorrespond to a respective one of the time-domain resource units in thefirst frequency-domain resource unit.

In a possible implementation, a left-to-right sequence of the bits inthe first bitmap may be consistent with a sequence of the time-domainresource units in the first frequency-domain resource unit.

In a possible implementation, the time-domain resource unit may be atleast one of a symbol, a symbol group, a slot, or a mini-slot.

In a possible implementation, after the operation that the networkdevice sends the first bitmap to the terminal device, the method mayfurther include that: the network device sends first indicationinformation to the terminal device. The first indication information isto indicate a time-domain resource not available for data transmissionof the terminal device in the first frequency-domain resource unit.

In a possible implementation, the first indication information may be asecond bitmap, each bit in the second bitmap may correspond to at leastone time-domain resource unit in the first frequency-domain resourceunit, and a value of each bit in the second bitmap may be used toindicate whether the corresponding at least one time-domain resourceunit is used for data transmission of the terminal device.

In a possible implementation, the method may further include that: thenetwork device sends second indication information to the terminaldevice. The second indication information is to indicate at least onefrequency-domain resource unit allocated for the terminal device by thenetwork device. The at least one frequency-domain resource unit includesthe first frequency-domain resource unit.

In a possible implementation, the second indication information may be athird bitmap. Each of bits in the third bitmap may correspond to arespective one of frequency-domain resource units in a system bandwidth.A value of each bit in the third bitmap is to indicate whether thefrequency-domain resource unit corresponding to the bit is used for datatransmission of the terminal device.

In a possible implementation, the second indication information mayspecifically be used to indicate at least two of a starting position ofthe at least one frequency-domain resource unit in a system bandwidth,an ending position of the at least one frequency-domain resource unit inthe system bandwidth, or a frequency-domain length of the at least onefrequency-domain resource unit.

In a possible implementation, the frequency-domain resource unit may bea PRB, an RBG, or a sub-band.

A third aspect provides a terminal device, which is configured toexecute the method in the first aspect or any possible implementation ofthe first aspect. Specifically, the terminal device includes unitsconfigured to execute the method in the first aspect or any possibleimplementation of the first aspect.

A fourth aspect provides a network device, which is configured toexecute the method in the second aspect or any possible implementationof the second aspect. Specifically, the network device includes unitsconfigured to execute the method in the second aspect or any possibleimplementation of the second aspect.

A fifth aspect provides a terminal device, which includes a memory, aprocessor, an input interface, and an output interface. The memory, theprocessor, the input interface, and the output interface are connectedthrough a bus system. The memory is configured to store instructions.The processor is configured to execute the instructions stored in thememory to execute the method in the first aspect or any possibleimplementation of the first aspect.

A sixth aspect provides a network device, which includes a memory, aprocessor, an input interface, and an output interface. The memory, theprocessor, the input interface, and the output interface are connectedthrough a bus system. The memory is configured to store instructions.The processor is configured to execute the instructions stored in thememory to execute the method in the second aspect or any possibleimplementation of the second aspect.

A seventh aspect provides a computer storage medium, which is configuredto store computer software instructions for executing the method in thefirst aspect or any possible implementation of the first aspect or themethod in the second aspect or any possible implementation of the secondaspect, including a program designed to execute the method in eachaspect.

These aspects or other aspects of the disclosure will become clearer andeasier to understand through the following descriptions about theembodiments.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of an application scenario according to anembodiment of the disclosure.

FIG. 2 is a schematic block diagram of a specific application scenarioaccording to an embodiment of the disclosure.

FIG. 3 is a schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 4 is another schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 5 is yet another schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 6 is still another schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 7 is still another schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 8 is still another schematic block diagram of a method for wirelesscommunication according to an embodiment of the disclosure.

FIG. 9 is a schematic block diagram of a terminal device according to anembodiment of the disclosure.

FIG. 10 is a schematic block diagram of a network device according to anembodiment of the disclosure.

FIG. 11 is another schematic block diagram of a terminal deviceaccording to an embodiment of the disclosure.

FIG. 12 is another schematic block diagram of a network device accordingto an embodiment of the disclosure.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the disclosure will beclearly and completely described below in combination with the drawingsin the embodiments of the disclosure.

It is to be understood that the technical solutions of the embodimentsof the disclosure may be applied to various communication systems, forexample, a global system of mobile communication (GSM), a code divisionmultiple access (CDMA) system, a wideband code division multiple access(WCDMA) system, a general packet radio service (GPRS), an LTE system, anLTE frequency division duplex (FDD) system, LTE time division duplex(TDD), a universal mobile telecommunication system (UMTS), a worldwideinteroperability for microwave access (WiMAX) communication system or afuture 5^(th) generation wireless communication system.

Particularly, the technical solutions of the embodiments of thedisclosure may be applied to various nonorthogonal multiple accesstechnology-based communication systems, for example, a sparse codemultiple access (SCMA) system and a low density signature (LDS) systemand the like. The SCMA system and the LDS system may also have othernames in the field of communications. Furthermore, the technicalsolutions of the embodiments of the disclosure may be applied tomulti-carrier transmission systems adopting nonorthogonal multipleaccess technologies, for example, orthogonal frequency divisionmultiplexing (OFDM), filter bank multi-carrier (FBMC), generalizedfrequency division multiplexing (GFDM) and filtered-OFDM (F-OFDM)systems adopting the nonorthogonal multiple access technologies.

In the embodiments of the disclosure, a terminal device may refer touser equipment (UE), an access terminal, a user unit, a user station, amobile station, a mobile radio station, a remote station, a remoteterminal, a mobile device, a user terminal, a terminal, a wirelesscommunication device, a user agent or a user apparatus. The accessterminal may be a cell phone, a cordless phone, a session initiationprotocol (SIP) phone, a wireless local loop (WLL) station, a personaldigital assistant (PDA), a handheld device with a wireless communicationfunction, a computing device or another processing device connected to awireless modem, a vehicle-mounted device, a wearable device, UE in afuture 5G network, UE in a future evolved public land mobile network(PLMN) or the like. There are no limits made in the embodiments of thedisclosure.

In the embodiments of the disclosure, a network device may be a deviceconfigured to communicate with the terminal device. The network devicemay be a base transceiver station (BTS) in the GSM or the CDMA, may alsobe a NodeB (NB) in the WCDMA system, may also be an evolutional Node B(eNB or eNodeB) in the LTE system and may further be a wirelesscontroller in a cloud radio access network (CRAN) scenario. Or, thenetwork device may be a relay station, an access point, avehicle-mounted device, a wearable device, a network device in thefuture 5G network, a network device in the future evolved PLMN or thelike. There are no limits made in the embodiments of the disclosure.

FIG. 1 is a schematic diagram of an application scenario according to anembodiment of the disclosure. A communication system illustrated in FIG.1 may include a terminal device 10 and a network device 20. The networkdevice 20 is configured to provide communication services for theterminal device 10 for access to a core network. The terminal device 10searches for a synchronization signal, broadcast signal and the likesent by the network device 20 to access the network, therebycommunicating with the network. Arrows illustrated in FIG. 1 mayrepresent uplink/downlink transmission implemented through a cellularlink between the terminal device 10 and the network device 20.

With the evolution of a wireless communication system, for improvingresource allocation flexibility and reducing a delay, in a New Radio(NR) system, flexibility of a time-domain position of a data channel hasbeen greatly improved. Symbol may be taken as a unit for allocationtime-domain resource of the data channel, and a time-domain startingpoint and time-domain length of the data channel may be flexiblyconfigured. However, symbol-level resource allocation may make a shapeof a resource region irregular. In a time-domain range scheduled bydownlink control information (DCI), some symbols may be available butsome symbols that have been scheduled for another terminal may notavailable, namely time-domain resources in a frequency-domain resourceunit are discontinuously allocated and available symbols in differentfrequency-domain resource units are different, as illustrated in FIG. 2.Adopting a related method for indicating a time-domain starting pointand a time-domain length may only indicate continuously distributedtime-domain resources and may not implement allocation of discontinuoustime-domain resources.

FIG. 3 is a schematic block diagram of a wireless communication method100 according to an embodiment of the disclosure. As illustrated in FIG.3, the method 100 includes the following operations.

In S210, a terminal device receives a first bitmap from a networkdevice. The first bitmap is to indicate a time-domain resource allocatedfor the terminal device by the network device in a firstfrequency-domain resource unit.

In S220, the terminal device performs data transmission with the networkdevice on the time-domain resource indicated by the first bitmap.

The network device may indicate, through a bitmap, a time-domainresource allocated for the terminal device in a frequency-domainresource unit to the terminal device. The time-domain resource unit maybe a scheduling unit in a time domain, and for example, may be asubframe or slot in LTE, and may also be a mini-slot or a time-domainscheduling unit consisting of a specific number of symbols in a newsystem such as 5G. The frequency-domain resource unit may be ascheduling unit in a frequency domain, may be a PRB or an RBG in LTE, afrequency-domain scheduling unit consisting of a specific number ofresource blocks in the new system, or a sub-band or the like.

It is to be understood that, in the embodiment of the disclosure, theoperation of performing data transmission on the time-domain resourceindicated by the first bitmap includes that data, i.e., downlink data,sent by the network device is received on the time-domain resourceindicated by the first bitmap and also includes that data, i.e., uplinkdata, is sent to the network device on the time-domain resourceindicated by the first bitmap.

The bitmap marks a value corresponding to an element with a bit. Thatis, in the embodiment of the disclosure, each bit in the first bitmapcorresponds to at least one time-domain resource unit in the firstfrequency-domain resource unit. A value of each bit in the first bitmapis to indicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission or not.

Specifically, the network device may divide the time-domain resourceunits for a frequency-domain resource unit into multiple groups andrepresent each group with a bit in a bitmap. For example, 1 representsthat the time-domain resource unit corresponding to the bit may beconfigured for data transmission of the terminal device. The bit mayalso be valued to be 0 to represent that the corresponding time-domainresource unit may be configured for data transmission of the terminaldevice, and in other words, the bit is valued to be 1 to represent thatthe time-domain resource unit corresponding to the bit may not beconfigured for data transmission of the terminal device. For example,the time-domain resource for a frequency-domain resource unit includes14 symbols, and the 14 symbols may be divided into five groups includingone symbol, two symbols, three symbols, four symbols and four symbolsrespectively. The bitmap includes 5 bits. One bit corresponds to thegroup with one symbol, and if the bit is 1, it may be represented thatthe symbol in the group is used for data transmission of the terminaldevice. Another bit corresponds to the group with two symbols, and ifthe bit is 1, it may be represented that both the two symbols in thegroup are used for data transmission of the terminal device, and so on.

Optionally, the network device may also determine, through mappingrelationships between time-domain resource units in a frequency-domainresource unit and bits, whether the corresponding time-domain resourceunits are configured for data transmission of the terminal device ornot. For example, a time-domain resource for a frequency-domain resourceunit includes 14 symbols. The network device divides the time-domainresource corresponding to the frequency-domain resource unit into sevengroups, each group including two adjacent symbols. The network deviceand the terminal device may predetermine that time-domain resource unitsin each group are represented with bits as follows: 11 represents thatboth the two symbols in each group are used for data transmission of theterminal device and 00, 01 and 10 all represent that neither of the twosymbols in each group is used for data transmission of the terminaldevice.

Optionally, the network device may configure that each of the bits inthe first bitmap corresponds to a respective one of the time-domainresource units in the first frequency-domain resource unit. That is, onebit corresponds to one time-domain resource unit. For example, thetime-domain resource for the first frequency-domain resource unitincludes 14 symbols. The first bitmap includes 14 bits. If a value ofthe first bitmap is 11101101011111 and a left-to-right sequence of thebits in the first bitmap represents a sequence of the time-domainresource units in the first frequency-domain resource unit,11101101011111 represents that all time-domain resource units 1, 2, 3,5, 6, 8, 10, 11, 12, 13 and 14 in the first frequency-domain resourceunit may be configured for data transmission of the terminal device.Similarly, the left-to-right sequence of the bits in the first bitmapmay inconsistent with the sequence of the time-domain resource units inthe first frequency-domain resource unit. For example, it may bepredetermined that the first seven bits in the first bitmap sequentiallyrepresent symbols 1, 3, 5, 7, 9, 11 and 13 in the first frequency-domainresource unit and the last seven bits sequentially represent symbols 2,4, 6, 8, 10, 12 and 14 in the first frequency-domain resource unit.Then, 11101101011111 represents that all the symbols 1, 3, 5, 9, 11, 2,6, 8, 10 and 12 in the first frequency-domain resource unit may beconfigured for data transmission of the terminal device.

It is to be understood that the time-domain resource unit may be atleast one of a symbol, a symbol group, a slot, or a mini-slot. Forexample, the time-domain resource corresponding to the firstfrequency-domain resource unit may include two slots. The first slot maybe divided into four symbol groups. The two slots are represented withtotally five bits, each of the first four bits corresponds to aresponsive one of the four symbol groups in the first slot, the last bitcorresponds to the second slot. If the value of the first bitmap is11001, it is represented that time-domain resources in the first groupand second group in the first slot are configured for data transmissionof the terminal device and the whole time-domain resource of the secondslot may be configured for data transmission of the terminal device.

Optionally, in the embodiment of the disclosure, after the operationthat the terminal device receives the first bitmap from the networkdevice, the method further includes that: the terminal device receivesfirst indication information from the network device. The firstindication information is to indicate a time-domain resource notavailable for data transmission of the terminal device in the firstfrequency-domain resource unit. The operation that the terminal deviceperforms data transmission with the network device on the time-domainresource indicated by the first bitmap includes that: the terminaldevice performs data transmission with the network device on atime-domain resource, other than the time-domain resource indicated bythe first indication information, in the time-domain resource indicatedby the first bitmap.

Under a normal condition, after the network device indicates aconfiguration of a frequency-domain resource unit to the terminaldevice, if the network device finds that the time-domain resourceoriginally allocated for the terminal device in the firstfrequency-domain resource unit may not available for data transmissionof the terminal device anymore, the network device is required to notifythe terminal device, and the terminal device may update the time-domainresource configured to transmit the data thereof in the firstfrequency-domain resource unit. For example, the first bitmap sent tothe terminal device is 11001100110011 and the first indicationinformation sent by the network device indicates that symbol 5 andsymbol 6 may not available for transmission of the terminal device forsome reasons. For example, the network device may allocate symbol 5 andsymbol 6 for another terminal device. Then, the terminal device mayacquire that the first bitmap may be updated to 11000000110011.

Optionally, in the embodiment of the disclosure, the first indicationinformation is a second bitmap. Each bit in the second bitmapcorresponds to at least one time-domain resource unit in the firstfrequency-domain resource unit, and a value of each bit in the secondbitmap is to indicate whether the at least one time-domain resource unitcorresponding to the bit is configured for data transmission of theterminal device or not.

A representation manner for the second bitmap may refer to arepresentation manner for the first bitmap and, for simplicity, will notbe elaborated herein.

Optionally, a solution in a conventional art may also be adopted for thefirst indication information. That is, the first indication informationindicates at least two of starting positions, time-domain lengths, orending positions of some time-domain resource units in the firstfrequency-domain resource unit. The terminal device may determine thespecific time-domain resource units indicated by the first indicationinformation in the first frequency-domain resource unit based on thestarting positions and the time-domain lengths, or the startingpositions and the ending positions, or the time-domain lengths and theending positions, etc.

Optionally, in the embodiment of the disclosure, the method furtherincludes that: the terminal device receives second indicationinformation from the network device. The second indication informationis to indicate at least one frequency-domain resource unit allocated forthe terminal device by the network device. The at least onefrequency-domain resource unit includes the first frequency-domainresource unit.

Optionally, the second indication information is a third bitmap. Each ofthe bits in the third bitmap corresponds to a responsive one offrequency-domain resource units in a system bandwidth. A value of eachbit in the third bitmap is to indicate whether the frequency-domainresource unit corresponding to the bit is configured for datatransmission of the terminal device or not.

Optionally, the second indication information is specifically used toindicate at least two of a starting position of the at least onefrequency-domain resource unit in a system bandwidth, an ending positionof the at least one frequency-domain resource unit in the systembandwidth, or a frequency-domain length of the at least onefrequency-domain resource unit.

Specifically, the network device may indicate the specificfrequency-domain resource unit including time-domain resources allocatedfor the terminal device to the terminal device. After the terminaldevice receives information about the frequency-domain resource unitindicated by the network device, the terminal device may determine thatall time-domain resources in the frequency-domain resource unit areavailable for data transmission of the terminal device. When theterminal device receives time-domain resources specifically allocatedfor the terminal device in a specific frequency-domain resource unit,the terminal device may determine the specific time-domain resources maybe used for data transmission of the terminal device. Or, when theterminal device receives the specific time-domain resource unitsindicated by the network device, that may not available for datatransmission of the terminal device in a specific frequency-domainresource unit, the terminal device may accordingly determine time-domainresource units available for data transmission of the terminal device.

From the above, according to the wireless communication method of theembodiment of the disclosure, continuous time-domain resources anddiscontinuous time-domain resources may be indicated, so thattime-domain scheduling flexibility may be improved.

The solution of the embodiment of the disclosure will be described belowin combination with FIG. 4 to FIG. 7 in detail.

Embodiment 1: as illustrated in FIG. 4, the network device schedulestime-frequency resources for a data channel of a terminal 1 within atime-frequency resource range including four frequency-domain resourceunits in a frequency domain and 14 symbols in a time domain, but part ofresources within this range are allocated for a terminal 2 and aterminal 3. For each frequency-domain resource unit, a 14 bit bitmap isadopted to indicate time-domain resources for the terminal 1. In anexample illustrated in FIG. 4, symbols 3 and 4 in each of thefrequency-domain resource units 1 and 2 are allocated for the terminal2, so that the resource indication bitmap for each of the twofrequency-domain resource units is 11001111111111. Symbols 3 and 4 ineach of the frequency-domain resource units 3 and 4 are allocated forthe terminal 2, and symbols 7-10 in each of the frequency-domainresource units 3 and 4 are allocated for the terminal 3, so that theresource indication bitmap for each of the two frequency-domain resourceunits is 11001100001111.

Embodiment 1 has the advantage that the specific time-domain resourceunits available for data transmission of the terminal device in afrequency-domain resource unit may be obtained through a bitmap.

Embodiment 2: the difference between this embodiment and embodiment 1 isthat a time-domain resource allocation unit is a group of symbols (in anexample illustrated in FIG. 5, two symbols form a group). For eachfrequency-domain resource unit, a 7 bit bitmap is adopted to indicatetime-domain resources for the terminal 1. In the example illustrated inFIG. 5, second groups of symbols in each of the frequency-domainresource units 1 and 2 are allocated for the terminal 2, so that theresource indication bitmap for each of the two frequency-domain resourceunits is 1011111. Second groups of symbols in each of thefrequency-domain resource units 3 and 4 are allocated for the terminal2, and fourth and fifth groups of symbols in each of thefrequency-domain resource units 3 and 4 are allocated for the terminal3, so that the resource indication bitmap for each of the twofrequency-domain resource units is 1010011.

Compared with embodiment 1, such a method has the advantage that thenumber of bits of the bitmap is smaller, so that an overhead may bereduced.

Embodiment 3: the difference between this embodiment and embodiment 1 isthat time-domain resources not allocated for a terminal are indicatedthrough a bitmap. In an example illustrated in FIG. 6, symbols 3 and 4in each of the frequency-domain resource units 1 and 2 are allocated foranother terminal, so that the resource indication bitmap for each of thetwo frequency-domain resource units is 00110000000000. Symbols 3-4 andsymbols 7-10 in each of the frequency-domain resource units 3 and 4 areallocated for the other terminals, so that the resource indicationbitmap for each of the two frequency-domain resource units is00110011110000. The terminal may exclude the resources indicated by thebitmap from a large time-frequency resource range to determine thetime-frequency resources allocated for the terminal.

Compared with embodiment 1, such a method has the advantage thatresources allocated for at least two terminals may be simultaneouslyindicated through a bitmap, so that the same bitmap may be shared forresource indication of multiple terminals, and a control signalingoverhead may be reduced.

Embodiment 4: the difference between this embodiment and embodiment 3 isthat the time-domain resource allocation unit is a group of symbols (inan example illustrated in FIG. 7, two symbols form a group). For eachfrequency-domain resource unit, a 7 bit bitmap is adopted to indicatethe time-domain resources for the terminal 1. In the example illustratedin FIG. 7, second groups of symbols in each of the frequency-domainresource units 1 and 2 are allocated for the terminal 2, so that theresource indication bitmap for each of the two frequency-domain resourceunits is 0100000. Second groups of symbols in each of thefrequency-domain resource units 3 and 4 are allocated for the terminal2, and fourth and fifth groups of symbols in each of thefrequency-domain resource units 3 and 4 are allocated for the terminal3, so that the resource indication bitmap for each of the twofrequency-domain resource units is 0101100. The terminal may exclude theresources indicated by the bitmap from a large time-frequency resourcerange to determine the time-frequency resources allocated for theterminal.

Compared with embodiment 3, such a method has the advantage that thenumber of bits in the bitmap is smaller, so that the overhead may bereduced.

FIG. 8 is a schematic block diagram of a wireless communication method200 according to an embodiment of the disclosure. As illustrated in FIG.8, the method 200 includes the following operation.

In S210, a network device sends a first bitmap to a terminal device. Thefirst bitmap is to indicate a time-domain resource allocated for theterminal device by the network device in a first frequency-domainresource unit.

From the above, according to the wireless communication method of theembodiments of the disclosure, continuous time-domain resources anddiscontinuous time-domain resources may be indicated, so thattime-domain scheduling flexibility may be improved.

Optionally, in the embodiment of the disclosure, each bit in the firstbitmap corresponds to at least one time-domain resource unit in thefirst frequency-domain resource unit. A value of each bit in the firstbitmap is to indicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission of the terminaldevice or not.

Optionally, in the embodiment of the disclosure, each of the bits in thefirst bitmap corresponds to a respective one of the time-domain resourceunits in the first frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, a left-to-rightsequence of the bits in the first bitmap is consistent with a sequenceof the time-domain resource units in the first frequency-domain resourceunit.

Optionally, in the embodiment of the disclosure, the time-domainresource unit may be at least one of a symbol, a symbol group, a slot,or a mini-slot.

Optionally, in the embodiment of the disclosure, after the operationthat the network device sends the first bitmap to the terminal device,the method further includes that: the network device sends firstindication information to the terminal device. The first indicationinformation is to indicate a time-domain resource not available for datatransmission of the terminal device in the first frequency-domainresource unit.

Optionally, in the embodiment of the disclosure, the second indicationinformation is a third bitmap. Each of the bits in the third bitmapcorresponds to a respective one of the frequency-domain resource unitsin a system bandwidth. A value of each bit in the third bitmap is toindicate whether the frequency-domain resource unit corresponding to thebit is used for data transmission of the terminal device or not.

Optionally, in the embodiment of the disclosure, the method furtherincludes that: the network device sends second indication information tothe terminal device. The second indication information is to indicate atleast one frequency-domain resource unit allocated for the terminaldevice by the network device. The at least one frequency-domain resourceunit includes the first frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, the second indicationinformation is a third bitmap. Each of the bits in the second bitmapcorresponds to a respective one of the frequency-domain resource unitsin a system bandwidth. A value of each bit in the third bitmap is toindicate whether the frequency-domain resource unit corresponding to thebit is used for data transmission of the terminal device or not.

Optionally, in the embodiment of the disclosure, the second indicationinformation is specifically used to indicate at least two of a startingposition of the at least one frequency-domain resource unit in a systembandwidth, an ending position of the at least one frequency-domainresource unit in the system bandwidth, or a frequency-domain length ofthe at least one frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, the frequency-domainresource unit may be a PRB, an RBG, or a sub-band.

It is to be understood that interaction between the network device andthe terminal device and related properties, functions and the likedescribed from the network device side correspond to related propertiesand functions described from the terminal device side. That is, if theterminal device sends information to the network device, the networkdevice may correspondingly receive the information. For simplicity, nomore elaborations will be made herein.

It is also to be understood that, in various embodiments of thedisclosure, a magnitude of a sequence number of each process does notmean an execution sequence and the execution sequence of each processshould be determined by its function and an internal logic and shouldnot form any limit to an implementation process of the embodiments ofthe disclosure.

FIG. 9 is a schematic block diagram of a signal transmission terminaldevice 300 according to an embodiment of the disclosure. As illustratedin FIG. 9, the terminal device 300 includes a first receiving unit 310and a transmission unit 320.

The first receiving unit 310 is configured to receive a first bitmapfrom a network device. The first bitmap is to indicate a time-domainresource allocated for the terminal device by the network device in afirst frequency-domain resource unit.

The transmission unit 320 is configured to perform data transmissionwith the network device on the time-domain resource indicated by thefirst bitmap.

From the above, according to the terminal device of the embodiment ofthe disclosure, continuous time-domain resources and discontinuoustime-domain resources may be indicated, so that time-domain schedulingflexibility may be improved.

Optionally, in the embodiment of the disclosure, each bit in the firstbitmap corresponds to at least one time-domain resource unit in thefirst frequency-domain resource unit, A value of each bit in the firstbitmap is to indicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission or not.

Optionally, in the embodiment of the disclosure, each of the bits in thefirst bitmap corresponds to a respective one of the time-domain resourceunits in the first frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, a left-to-rightsequence of the bits in the first bitmap is consistent with a sequenceof the time-domain resource units in the first frequency-domain resourceunit.

Optionally, in the embodiment of the disclosure, the time-domainresource unit is at least one of a symbol, a symbol group, a slot, or amini-slot.

Optionally, in the embodiment of the disclosure, the terminal device 300includes a second receiving unit 330, configured to receive firstindication information from the network device. The first indicationinformation is to indicate a time-domain resource not available for datatransmission of the terminal device in the first frequency-domainresource unit. The transmission unit 320 is specifically configured toperform data transmission with the network device on a time-domainresource, other than the time-domain resource indicated by the firstindication information, in the time-domain resource indicated by thefirst bitmap.

Optionally, in the embodiment of the disclosure, the first indicationinformation is a second bitmap. Each bit in the second bitmapcorresponds to at least one time-domain resource unit in the firstfrequency-domain resource unit. A value of each bit in the second bitmapis to indicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission of the terminaldevice or not.

Optionally, in the embodiment of the disclosure, the terminal device 300includes a third receiving unit 340, configured to receive secondindication information from the network device. The second indicationinformation is to indicate at least one frequency-domain resource unitallocated for the terminal device by the network device. The at leastone frequency-domain resource unit includes the first frequency-domainresource unit.

Optionally, in the embodiment of the disclosure, the second indicationinformation is a third bitmap. Each of the bits in the third bitmapcorresponds to a respective one of the frequency-domain resource unitsin a system bandwidth. A value of each bit in the third bitmap is toindicate whether the frequency-domain resource unit corresponding to thebit is configured for data transmission of the terminal device or not.

Optionally, in the embodiment of the disclosure, the second indicationinformation is specifically used to indicate at least two of a startingposition of the at least one frequency-domain resource unit in a systembandwidth, an ending position of the at least one frequency-domainresource unit in the system bandwidth, or a frequency-domain length ofthe at least one frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, the frequency-domainresource unit is a PRB, an RBG or a sub-band.

It is to be understood that the terminal device 300 according to theembodiment of the disclosure may correspond to the terminal device inthe method embodiments of the disclosure. The abovementioned and otheroperations and/or functions of each unit in the terminal device 300 areadopted to implement the corresponding operations executed by theterminal device in the method in FIG. 3 and will not be elaboratedherein for simplicity.

FIG. 10 is a schematic block diagram of a network device 400 accordingto an embodiment of the disclosure. As illustrated in FIG. 10, thenetwork device 400 includes a first sending unit 410.

The first sending unit 410 is configured to send a first bitmap to afirst terminal device. The first bitmap is to indicate a time-domainresource allocated for the first terminal device by the network devicein a first frequency-domain resource unit.

From the above, according to the network device of the embodiment of thedisclosure, continuous time-domain resources and discontinuoustime-domain resources may be indicated, so that time-domain schedulingflexibility may be improved.

Optionally, in the embodiment of the disclosure, each bit in the firstbitmap corresponds to at least one time-domain resource unit in thefirst frequency-domain resource unit. A value of each bit in the firstbitmap is to indicate whether the at least one time-domain resource unitcorresponding to the bit is configured for data transmission of thefirst terminal device or not.

Optionally, in the embodiment of the disclosure, each of the bits in thefirst bitmap corresponds to a respective one of the time-domain resourceunits in the first frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, a left-to-rightsequence of the bits in the first bitmap is consistent with a sequenceof the time-domain resource units in the first frequency-domain resourceunit.

Optionally, in the embodiment of the disclosure, the time-domainresource unit is at least one of a symbol, a symbol group, a slot, or amini-slot.

Optionally, in the embodiment of the disclosure, the network device 400further includes a second sending unit 420, configured to send firstindication information to the first terminal device. The firstindication information is to indicate a time-domain resource notavailable for data transmission of the terminal device in the firstfrequency-domain resource unit.

Optionally, in the embodiment of the disclosure, the first indicationinformation is a second bitmap. Each bit in the second bitmapcorresponds to at least one time-domain resource unit in the firstfrequency-domain resource unit. A value of each bit in the second bitmapis to indicate whether the at least one time-domain resource unitcorresponding to the bit is configured for data transmission of theterminal device or not.

Optionally, in the embodiment of the disclosure, the network device 400includes a third sending unit 430, configured to send second indicationinformation to the terminal device. The second indication information isto indicate at least one frequency-domain resource unit allocated forthe first terminal device by the network device. The at least onefrequency-domain resource unit includes the first frequency-domainresource unit.

Optionally, in the embodiment of the disclosure, the second indicationinformation is a third bitmap. Each of the bits in the third bitmapcorresponds to a respective one of the frequency-domain resource unitsin a system bandwidth. A value of each bit in the third bitmap is toindicate whether the frequency-domain resource unit corresponding to thebit is configured for data transmission of the terminal device.

Optionally, in the embodiment of the disclosure, the second indicationinformation is specifically used to indicate at least two of a startingposition of the at least one frequency-domain resource unit in a systembandwidth, an ending position of the at least one frequency-domainresource unit in the system bandwidth, or a frequency-domain length ofthe at least one frequency-domain resource unit.

Optionally, in the embodiment of the disclosure, the frequency-domainresource unit is a PRB, an RBG, or a sub-band.

It is to be understood that the network device 400 according to theembodiment of the disclosure may correspond to the network device in themethod embodiments of the disclosure. The abovementioned and otheroperations and/or functions of each unit in the network device 400 areadopted to implement the corresponding operations executed by thenetwork device in the method in FIG. 8 and will not be elaborated hereinfor simplicity.

As illustrated in FIG. 1I, an embodiment of the disclosure also providesa terminal device 500. The terminal device 500 may be the terminaldevice 300 in FIG. 9, and may be configured to execute operations of theterminal device in the method 100 illustrated in FIG. 3. The terminaldevice 500 includes an input interface 510, an output interface 520, aprocessor 530 and a memory 540. The input interface 510, the outputinterface 520, the processor 530 and the memory 540 may be connectedthrough a bus system. The memory 540 is configured to store a program,instructions, or a code. The processor 530 is configured to execute theprogram, the instructions or the code in the memory 540 to control theinput interface 510 to receive a signal, control the output interface520 to send a signal and complete operations in the method embodiments.

From the above, according to the terminal device of the embodiment ofthe disclosure, continuous time-domain resources and discontinuoustime-domain resources may be indicated, so that time-domain schedulingflexibility may be improved.

It is to be understood that, in the embodiment of the disclosure, theprocessor 530 may be a central processing unit (CPU). The processor 530may also be another universal processor, a digital signal processor, anapplication specific integrated circuit, a field-programmable gate arrayor another programmable logic device, discrete gate or transistor logicdevice and discrete hardware component and the like. The universalprocessor may be a microprocessor. Or, the processor may also be anyconventional processor and the like.

The memory 540 may include a read-only memory (ROM) and a random accessmemory (RAM) and provides instructions and data for the processor 530. Apart of the memory 540 may further include a non-volatile RAM. Forexample, the memory 540 may further store information of a device type.

In an implementation process, each operation of the method may beimplemented by an integrated logic circuit of hardware in the processor530 or instructions in a software form. The operations of the methoddisclosed in combination with the embodiments of the disclosure may bedirectly executed and completed by a hardware processor or executed andcompleted by a combination of hardware and software modules in theprocessor. The software module may be located in a mature storage mediumin the art such as a RAM, a flash memory, a ROM, a programmable ROM orelectrically erasable programmable ROM and a register. The storagemedium is located in the memory 540. The processor 530 reads informationfrom the memory 540 and completes the operations of the method incombination with hardware. No more detailed descriptions will be madeherein to avoid repetitions.

In a specific implementation, the first receiving unit 310, the secondreceiving unit 320 and the third receiving unit 330 in the terminaldevice 300 may be implemented by the input interface 510 in FIG. 11.

As illustrated in FIG. 12, an embodiment of the disclosure also providesa network device 600. The network device 600 may be the network device400 in FIG. 10, and may be configured to execute operations of thenetwork device in the method 200 illustrated in FIG. 8. The networkdevice 600 includes an input interface 610, an output interface 620, aprocessor 630 and a memory 640. The input interface 610, the outputinterface 620, the processor 630 and the memory 640 may be connectedthrough a bus system. The memory 640 is configured to store a program,instructions, or a code. The processor 630 is configured to execute theprogram, the instructions, or the code in the memory 640 to control theinput interface 610 to receive a signal, control the output interface620 to send a signal and complete operations in the method embodiments.

From the above, according to the network device of the embodiment of thedisclosure, continuous time-domain resources and discontinuoustime-domain resources may be indicated, so that time-domain schedulingflexibility may be improved.

It is to be understood that, in the embodiment of the disclosure, theprocessor 630 may be a CPU. The processor 630 may also be anotheruniversal processor, a digital signal processor, an application specificintegrated circuit, a field-programmable gate array or anotherprogrammable logic device, discrete gate or transistor logic device anddiscrete hardware component and the like. The universal processor may bea microprocessor. Or, the processor may also be any conventionalprocessor and the like.

The memory 640 may include a ROM and a RAM and provides instructions anddata for the processor 630. A part of the memory 640 may further includea non-volatile RAM. For example, the memory 640 may further storeinformation of a device type.

In an implementation process, each operation of the method may beimplemented by an integrated logic circuit of hardware in the processor630 or instructions in a software form. The operations of the methoddisclosed in combination with the embodiments of the disclosure may bedirectly executed and completed by a hardware processor or executed andcompleted by a combination of hardware and software modules in theprocessor. The software module may be located in a mature storage mediumin the art such as a RAM, a flash memory, a ROM, a programmable ROM orelectrically erasable programmable ROM and a register. The storagemedium is located in the memory 640. The processor 630 reads informationfrom the memory 640 and completes the operations of the method incombination with hardware. No more detailed descriptions will be madeherein to avoid repetitions.

In a specific implementation, the first sending unit 410, the secondsending unit 420 and the third sending unit 430 may be implemented bythe output interface 620 in FIG. 12.

An embodiment of the disclosure also discloses a computer-readablestorage medium having stored thereon one or more programs includinginstructions that, when executed by a portable electronic deviceincluding multiple application programs, enable the portable electronicdevice to execute the method of the embodiment illustrated in FIG. 3 orFIG. 8.

An embodiment of the disclosure also discloses a computer program, whichincludes instructions, the computer program being executed by a computerto enable the computer to execute corresponding operations in the methodof the embodiment illustrated in FIG. 3 or FIG. 8.

Those of ordinary skill in the art may realize that the units andalgorithm operations of each example described in combination with theembodiments disclosed in the disclosure may be implemented by electronichardware or a combination of computer software and the electronichardware. Whether these functions are executed in a hardware or softwaremanner depends on specific applications and design constraints of thetechnical solutions. Professionals may realize the described functionsfor each specific application by use of different methods, but suchrealization shall fall within the scope of the disclosure.

Those skilled in the an may clearly learn about that specific workingprocesses of the system, device and unit described above may refer tothe corresponding processes in the method embodiment and will not beelaborated herein for convenient and brief description.

In some embodiments provided by the disclosure, it is to be understoodthat the disclosed system, device and method may be implemented inanother manner. For example, the device embodiment described above isonly schematic, and for example, division of the units is only logicfunction division, and other division manners may be adopted duringpractical implementation. For example, multiple units or components maybe combined or integrated into another system, or some characteristicsmay be neglected or not executed. In addition, coupling or directcoupling or communication connection between each displayed or discussedcomponent may be indirect coupling or communication connection,implemented through some interfaces, of the device or the units, and maybe electrical and mechanical or adopt other forms.

The units described as separate parts may or may not be physicallyseparated, and pans displayed as units may or may not be physical units,and namely may be located in the same place, or may also be distributedto multiple network units. Part or all of the units may be selected toachieve the purpose of the solutions of the embodiments according to apractical requirement.

In addition, each functional unit in each embodiment of the disclosuremay be integrated into a processing unit, each unit may also physicallyexist independently, and two or more than two units may also beintegrated into a unit.

When being realized in form of software functional unit and sold or usedas an independent product, the function may also be stored in acomputer-readable storage medium. Based on such an understanding, thetechnical solutions of the disclosure substantially or parts makingcontributions to the conventional art or part of the technical solutionsmay be embodied in form of software product, and the computer softwareproduct is stored in a storage medium, including a plurality ofinstructions configured to enable a computer device (which may be apersonal computer, a server, a network device or the like) to executeall or part of the steps of the method in each embodiment of thedisclosure. The storage medium includes: various media capable ofstoring program codes such as a U disk, a mobile hard disk, a ROM, aRAM, a magnetic disk or an optical disk.

The above is only the specific implementation of the disclosure and notintended to limit the scope of protection of the disclosure. Anyvariations or replacements apparent to those skilled in the art withinthe technical scope disclosed by the disclosure shall fall within thescope of protection of the disclosure. Therefore, the scope ofprotection of the disclosure shall be subject to the scope of protectionof the claims.

The invention claimed is:
 1. A method for wireless communication,comprising: receiving, by a terminal device, a first bitmap from anetwork device, wherein the first bitmap is to indicate one or moretime-domain resource units allocated for the terminal device by thenetwork device in a first frequency-domain resource unit; andperforming, by the terminal device, data transmission with the networkdevice on the q or more time-domain resource units indicated by thefirst bitmap, wherein each bit in the first bitmap corresponds to atleast one time-domain resource unit in the first frequency-domainresource unit, and a value of each bit in the first bitmap is toindicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission of the terminaldevice.
 2. The method of claim 1, wherein each of bits in the firstbitmap corresponds to a respective one of time-domain resource units inthe first frequency-domain resource unit.
 3. The method of claim 1,wherein a left-to-right sequence of bits in the first bitmap isconsistent with a sequence of time-domain resource units in the firstfrequency-domain resource unit.
 4. The method of claim 1, wherein htime-domain resource unit comprises at least one of a symbol, a symbolgroup, a slot, or a mini-slot.
 5. The method of claim 1, furthercomprising: receiving, by the terminal device, second indicationinformation from the network device, wherein the second indicationinformation is to indicate at least one frequency-domain resource unitallocated for the terminal device by the network device, and the atleast one frequency-domain resource unit comprises the firstfrequency-domain resource unit.
 6. The method of claim 5, wherein thesecond indication information is a third bitmap, each of bits in thethird bitmap corresponds to a respective one of frequency-domainresource units in a system bandwidth, and a value of each bit in thethird bitmap is to indicate whether the frequency-domain resource unitcorresponding to the bit is used for data transmission of the terminaldevice.
 7. The method of claim 5, wherein the second indicationinformation is to indicate at least two of a starting position of the atleast one frequency-domain resource unit in a system bandwidth, anending position of the at least one frequency-domain resource unit inthe system bandwidth, or a frequency-domain length of the at least onefrequency-domain resource unit.
 8. The method of claim 1, wherein thefirst frequency-domain resource unit comprises a physical resource block(PRB), a resource block group (RBG), or a sub-band.
 9. A terminaldevice, comprising: an input interface, configured to receive a firstbitmap from a network device, wherein the first bitmap is to indicateone or more time-domain resource units allocated for the terminal deviceby the network device in a first frequency-domain resource unit; and anoutput interface, configured to perform data transmission with thenetwork device on the one or more time-domain resource units indicatedby the first bitmap, wherein each bit in the first bitmap corresponds toat least one time-domain resource unit in the first frequency-domainresource unit, and a value of each bit in the first bitmap is toindicate whether the at least one time-domain resource unitcorresponding to the bit is used for data transmission of the terminaldevice.
 10. The terminal device of claim 9, wherein each of bits in thefirst bitmap corresponds to a respective one of time-domain resourceunits in the first frequency-domain resource unit.
 11. The terminaldevice of claim 9, wherein a left-to-right sequence of bits in the firstbitmap is consistent with a sequence of time-domain resource units inthe first frequency-domain resource unit.
 12. The terminal device ofclaim 9, wherein a time-domain resource unit comprises at least one of asymbol, a symbol group, a slot, or a mini-slot.
 13. The terminal deviceof claim 9, wherein the input interface is further configured to receivefirst indication information from the network device, wherein the firstindication information is to indicate a time-domain resource unit notavailable for data transmission of the terminal device in the firstfrequency-domain resource unit, and the output interface is specificallyconfigured to: perform data transmission with the network device on theone or more time-domain resource units indicated by the first bitmap,other than the time-domain resource unit indicated by the firstindication information.
 14. The terminal device of claim 13, wherein thefirst indication information is a second bitmap, each bit in the secondbitmap corresponds to at least one time-domain resource unit in thefirst frequency-domain resource unit, and a value of each bit in thesecond bitmap is to indicate whether the at least one time-domainresource unit corresponding to the bit is used for data transmission ofthe terminal device.
 15. The terminal device of claim 9, wherein theinput interface is further configured to receive second indicationinformation from the network device, wherein the second indicationinformation is to indicate at least one frequency-domain resource unitallocated for the terminal device by the network device, and the atleast one frequency-domain resource unit comprises the firstfrequency-domain resource unit.
 16. The terminal device of claim 15,wherein the second indication information is a third bitmap, each ofbits in the third bitmap corresponds to a respective one offrequency-domain resource units in a system bandwidth, and a value ofeach bit in the third bitmap is to indicate whether the frequency-domainresource unit corresponding to the bit is use for data transmission ofthe terminal device.
 17. The terminal device of claim 15, wherein thesecond indication information is to indicate at least two of a startingposition of the at least one frequency-domain resource unit in a systembandwidth, an ending position of the at least one frequency-domainresource unit in the system bandwidth, or a frequency-domain length ofthe at least one frequency-domain resource unit.
 18. The terminal deviceof claim 9, wherein the first frequency-domain resource unit comprises aphysical resource block (PRB), a resource block group (RBG), or asub-band.